1. None if events forming the civil claim led to conviction of first-degree aggravated sexual or sexual assault. Conn. Gen. Stat. § 52-577e
2. + 30 yrs from majority otherwise. Conn. Gen. Stat. § 52-577d
a. “Notwithstanding the provisions of section 52-577, no action to recover damages for personal injury to a minor, including emotional distress, caused by sexual abuse, sexual exploitation or sexual assault may be brought by such person later than thirty years from the date such person attains the age of majority.”
TOLLING:
1. Majority, yes. Conn. Gen. Stat. § 52-577d
2. Discovery, common law version yes, was narrow; but application of discovery rule mooted by current CSA statute:
a. Tarnowsky v. Socci, 856 A.2d 408 (Conn. 2004) (finding that statute of limitations does not begin to run until the injured party knew, or reasonably should have known, the identity of the tortfeasor)
b. BUT SEE, application of any common law discovery is mooted by statutory language in Conn. Gen. Stat. § 52-577d –Rosado v. Bridgeport Roman Catholic Diocese Corp., 1997 Conn. Super. LEXIS 2496 (Conn. Super. Ct. Sept. 15 1997) (statute moots common law discovery and by its own language acts as statute of repose)

CONN. GEN. STAT. § 54-193 (a) There shall be no limitation of time within which a person may be prosecuted for (1) a capital felony under the provisions of section 53a-54b in effect prior to April 25, 2012, a class A felony or a violation of section 53a-54d or 53a-169…”CONN. GEN. STAT. § 53A-70C(a). Aggravated sexual assault of a minor: Class A felony.
DEFINED: “ (a) A person is guilty of aggravated sexual assault of a minor when such person commits a violation of subdivision (2) of subsection (a) of section 53-21 or section 53a-70, 53a-70a, 53a-71, 53a-86, 53a-87 or 53a-196a and the victim of such offense is under thirteen years of age, and (1) such person kidnapped or illegally restrained the victim, (2) such person stalked the victim, (3) such person used violence to commit such offense against the victim, (4) such person caused serious physical injury to or disfigurement of the victim, (5) there was more than one victim of such offense under thirteen years of age, (6) such person was not known to the victim, or (7) such person has previously been convicted of a violent sexual assault.”
Codes sections offenses listed above include: Injury or risk of injury to, or impairing morals of, children. Sale of children; Sexual assault in the first degree, second degree, third degree; promoting prostitution; using a minor in an obscene performance
OTHER FELONIES – + 30 years form majority. Conn. Gen. Stat. § 54-193a
Sec. 54-193a. (“ Notwithstanding the provisions of section 54-193, no person may be prosecuted for any offense, except a class A felony, involving sexual abuse, sexual exploitation or sexual assault of a minor except within thirty years from the date the victim attains the age of majority or within five years from the date the victim notifies any police officer or state’s attorney acting in such police officer’s or state’s attorney’s official capacity of the commission of the offense, whichever is earlier, provided if the prosecution is for a violation of subdivision (1) of subsection (a) of section 53a-71, the victim notified such police officer or state’s attorney not later than five years after the commission of the offense.